古机械复原研究的方法与程序

古机械的复原是以一古机械原型为本体,根据古代的机械原理、机械工程、以及工艺技术等,重新建构此一机械.本研究以古中国机械为对象,根据史料成分进行分类,并提出一复原研究程序,有系统地建构古机械原型及古代机械科技和工艺,目的在提供研究机械史学领域的一个创新方法.     

The tragedy of the canon; or,path dependence in the history and philosophy of science

We have previously argued that historical cases must be rendered canonical before they can plausibly serve as evidence for philosophical claims, where canonicity is established through a process of negotiation among historians and philosophers of science (Bolinska and Martin, 2020). Here, we extend this proposal by exploring how that negotiation might take place in practice. The working stock of historical examples that philosophers tend to employ has long been established informally, and, as a result, somewhat haphazardly. The composition of the historical canon of philosophy of science is therefore path dependent, and cases often become stock examples for reasons tangential to their appropriateness for the purposes at hand. We show how the lack of rigor around the canonization of case studies has muddied the waters in selected philosophical debates. This, in turn, lays the groundwork for proposing ways in which they can be improved.     

Feynman路径积分的拓扑计算

本文用代数拓扑计算了定轴转子和无限深方势阱的Feynman路径积分,分别给出了它们的本征波函数和能量本征值,所得结果与用其他方法得到的结果一致。     

浅论古代文学教学的当代性

随着时代的变迁和社会的发展，我国高校中文专业古代文学学科的教学出现了与时代需要相脱节而导致学生厌学的局面。为使古代文学的教学适应“三个面向”，必须进行相应的改革，而改革的关键是在教学中必须加强和突出当代性，即用当代意识精选、整合教学内容，用当代意识观照、发掘、阐释古代文学作品的人文与科学精神，用当代意识改革传统教学方法和手段。     

黑龙江区域地理环境演变

本文是对黑龙江区域地理环境研完中的部分内容。是从宏观上和整体上进行综合研究黑龙江区域地理环境(古地理环境、现代地理环境)的历史演变过程,以及人类活动对地理环境的影响。并初步探讨如何正确处理人与环境的关系。     

A Problem in Combinatorics

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The use of museum specimens to reconstruct the genetic variability and relationships of extinct populations

In this review, we discuss the use of DNA from museum specimens to address conservation genetic questions. We provide four examples from our previous studies of the northern hairy-nosed wombat, African wild dog, Ethiopian wolf and red wolf. These species were genetically surveyed using two molecular approaches: first, analysis of short sequences in the mitochondrial genome using species-specific primers, and second, analysis of hypervariable microsatellite loci. The studies demonstrate that museum-derived DNA adds an important dimension to the genetic study of extant populations. Inaccessible populations can be studied, and both the loss of genetic variation and its distribution over space and time can be better understood. Finally, analysis of additional museum material provides definitive evidence for a hybrid origin of the red wolf.     

安徽南陵西周硫化矿冶铜技术的研究

本文根据考古发现，研究了安徽南陵西周硫化矿冶铜技术，并分析了我国发明这一技术的时间、意义、科学价值及其对日本青铜文化的影响     

翁坪古滑坡岩体变形破坏及稳定性分析

本文通过对翁坪古滑坡特征的研究分析，探讨了该古滑坡岩体变形破坏的基本模式和运移机制，确立了古滑坡基本稳定的结论。